My past excperience with martingales was FXPROmaker, cost me $400 and $800 out of my Thou$ account got shot soon after purcahse, no waiting needed, my "luck of the draw" to have worst worst case scenerio occur promptly!
And if that wasn't enough, then many months later y-oww comes along, never had I seen an EA that looked so wonderfullky perfect little steps of gain, 'cept one thing, those little increases of lot size like to 2X or 3X etc, etc...... one day is dynamite! Yep, one trend that doesn't let-up occurs within couple of weeks and again a fairly large chunk of my $500 account is blown to smithereens! (fortunately they had let me have my $500 back early-on)
Recently a internet associate wanted me to take a look at an e_Ad for a Pro-EA, I was impressed.....UNTIL I saw the warning signs of it "compensating" for losing times with a 17X increase in lot size on 4 different days after the losing one, Wo!!!!!!
So beware of the warning signs, martingale mechanisms can even be hidden traights of an EA!
jb